Carrier 19XRV Start-Up, Operation And Maintenance Instructions Manual page 37

MONITORED PARAMETER
Temperature Sensors Out of Range 260-271,140,141 0.06 > Voltage Ratio > 0.98 or – 40 F > Temperature >
Pressure Transducers Out of
Range
High Compressor Discharge
Temperature
High Motor Temperature
Compressor Thrust Bearing
Temperature
Low Evaporator Temperature
(Freeze Protection)
Transducer Voltage Fault
High Condenser Pressure
- Control
- Switch
- Prestart
Low Condenser Pressure
(Freeze Protection)
Oil
- Low Pressure
- Low Pressure
- Low Pressure
- Pressure Sensor Fault
- Low Temperature
Line Voltage
- High
- High
- Low
- Low
- Imbalance
Line Current - Single Cycle Dropout 210/144
- Imbalance
Power - Line Frequency Out of
Range
- ICVC Power on Reset
Motor - Surge
Surge
Current Imbalance
Overload Trip
Excessive Amps
Acceleration Fault
Amps Not Sensed
Table 5 - Protective limits and control settings
ALARM/ALERT LIMIT
118°C for 3 seconds
260-271 0.06 > Voltage Ratio > 0.98 for 3 seconds
231 COMP DISCHARGE TEMP > 104°C
167 COMP DISCHARGE TEMP > COMP DISCHARGE
ALERT
103 COMP DISCHARGE TEMP > COMP DISCHARGE
ALERT – 5.6°C
233 COMP MOTOR WINDING TEMP > 104°C
102 COMP MOTOR WINDING TEMP > COMP MOTOR
TEMP OVERRIDE – 5.6 K
101 COMP THRUST BRG TEMP > COMP THRUST BRG
ALERT – 5.6°C
234 COMP THRUST BRG TEMP > 85°C
243 Chiller in RECYCLE SHUTDOWN and EVAP TEMP<
EVAP REFRIG TRIPPOINT + 0.5°C
232 EVAP REFRIG TEMP < 0.5°C (water) and EVAP
APPROACH > EVAP APPROACH ALERT
-17.8°C < EVAP REFRIG TEMP < 4.4°C (brine) and
EVAP APPROACH > EVAP APPROACH ALERT
104 EVAPORATOR REFRIG TEMP < 0.5°C + REFRIG
OVERRIDE DELTA T (water)
EVAPORATOR REFRIG TEMP < EVAP REFRIG
TRIPPOINT (brine)
239 5.5 V d.c. < Voltage Reference < 4.5 V d.c.
235 CONDENSER PRESSURE > 1137 kPa
207 High Pressure Switch Open (1137 ± 35 kPa) & VFD
START = YES
106 CONDENSER PRESSURE > COND PRESS
OVERRIDE – 137 kPa
CONDENSER PRESSURE > 1000 kPa
244 Chiller in PUMPDOWN mode and CONDENSER
REFRIG TEMP < CONDENSER FREEZE POINT
154 Energises condenser pump relay if CONDENSER
REFRIG TEMP < CONDENSER FREEZE POINT.
Deenergises condenser pump relay when
CONDENSER REFRIG TEMP > CONDENSER
FREEZE POINT + 2.8 K and ENTERING COND
LIQUID > CONDENSER FREEZE POINT
228 OIL PRESSURE DELTA P < 90 kPa and VFD START
= TRUE
OIL PRESSURE DELTA P < 124 kPa and startup
complete after OIL PRESS VERIFY TIME elapsed
142 OIL PRESSURE DELTA P < 124 kPa and startup
complete
227 OIL PRESSURE DELTA P > 28 kPa immediately
before oil pump turned on
105 OIL SUMP TEMP < 66°C and OIL SUMP TEMP <
EVAP REFRIG TEMP + 27.8°C
211/145 Line voltage > approximately 528 V, limits are
calculated by VFD
108 PERCENT LINE VOLTAGE > Overvoltage threshold
212/146 DC BUS VOLTAGE < approximately 408 V, limits are
calculated by a VFD
107 PERCENT LINE VOLTAGE < Undervoltage threshold
216 LINE VOLTAGE IMBALANCE > LINE VOLTAGE %
IMBALANCE
Line Voltage on 2 Phases < 50% for 1 Cycle
209/143 LINE CURRENT IMBALANCE>LINE CURRENT %
IMBALANCE
222 47 Hz < LINE FREQUENCY < 63 Hz
214/148 Loss of control power to ICVC for excessive time
period
238 > 5 surge events within SURGE TIME PERIOD and
VFD SPEED > 90%
236 > 5 surge events within SURGE TIME PERIOD and
VFD SPEED < 90%
225 MOTOR CURRENT IMBALANCE > MOTOR
CURRENT % IMBALANCE
217 Any LOAD CURRENT PHASE > 108% for Excessive
Time Period
208 PERCENT LOAD CURRENT > 110% for 30 seconds.
203 PERCENT LOAD CURRENT > 95% and VFDSTART
= TRUE for 5 to 40 seconds
202 PERCENT LOAD CURRENT < 5% for 3 seconds and
VFD START=TRUE for 20 seconds
COMMENTS
Preset Alarm, Voltage Ratio = Input Voltage/ Voltage
Reference (5 V)
Preset Alarm, Voltage Ratio = Input Voltage/ Voltage
Reference (5 V)
Preset Alarm, Configure COMP DISCHARGE ALERT in
SETUP1 screen
Configure COMP DISCHARGE ALERT in SETUP1
screen
Prestart Alert, Configure COMP DISCHARGE ALERT in
SETUP1 screen
Preset Alarm, Configure COMP MOTOR TEMP
OVERRIDE in SETUP1 screen
Prestart Alert, Configure COMP MOTOR TEMP
OVERRIDE in SETUP1 screen
Preset Alert, Configure COMP THRUST BRG ALERT in
SETUP1 screen
Preset Alarm
Preset Alarm, configure EVAP REFRIG TRIPPOINT in
SETUP1 screen
Preset Alarm, Configure EVAP APPROACH ALERT in
SETUP1 screen
Configure EVAP REFRIG TRIP POINT and CHILLED
MEDIUM in SETUP1 screen
Prestart Alert, Configure REFRIG OVERRIDE DELTA T
in SETUP1 screen
Prestart Alert, Configure EVAP REFRIG TRIPPOINT and
CHILLED MEDIUM in SETUP1 screen
Preset Alarm
Preset Alarm, Configure COND PRESS OVERRIDE in
SETUP1 screen
Preset Alarm, Switch closes at 758 kPa
Prestart Alert, Configure COND PRESS OVERRIDE in
SETUP1 screen
Prestart Alert
Preset Alarm, Configure CONDENSER FREEZE POINT
in SETUP1 screen.
Configure CONDENSER FREEZE POINT in SETUP1
screen
Preset Alarm
Preset Alarm, Configure OIL PRESS VERIFY TIME in
SETUP1 screen
Preset Alert
Preset Alarm
Prestart Alert
Preset Alarm/Alert
Preset Prestart Alert
Preset Alarm/Alert
Preset Prestart Alert
Configure LINE VOLTAGE % IMBALANCE and LINE
VOLT IMBALANCE TIME in VFD CONF screen
Preset Alarm
Configure LINE CURRENT % IMBALANCE and LINE
CURRENT IMBALANCE TIME in VFD_CONF screen
Preset Alarm
Preset Alarm
Preset Alarm, Configure SURGE DELTA% AMPS and
SURGE TIME PERIOD in OPTIONS screen
Preset Alarm, Configure SURGE DELTA% AMPS and
SURGE TIME PERIOD in OPTIONS screen
Configure MOTOR CURRENT % IMBALANCE and
MOTOR CURRENT IMBAL TIME in VFD_CONF screen
Preset Alarm, Configure MOTOR LOAD ACTIVE
DEMAND LIMIT in MAINSTAT screen
Preset Alarm
Preset Alarm, PERCENT LOAD CURRENT = AVERAGE
LOAD CURRENT/MOTOR RATED LOAD AMPS
Preset Alarm, PERCENT LOAD CURRENT = AVERAGE
LOAD CURRENT/MOTOR RATED LOAD AMPS
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